Answer:
The best answer is A.
(Newton’s “Mathematica” is not exactly new, and not filled with errors).
Explanation:
Answer:
9Be
4
Explanation:
Atomic number = (3+2)-1= 4
Mass number = (6+4)-1 =9
It is primarily, from this list, nitrogen and carbon that trap infrared energy, although the extent to which this happens is determined by many other factors, such as heat. :D
I think the C but im not sure about it
Answer:
1.092 moles of Mg
Explanation:
Avogadro's number is a constant that define the number of particles (Such as atoms, molecules, electrons, ions) that you have in 1 mole. That means in 1 mole you have 6.022x10²³ of the particle in question.
If you have 6.578x10²³ atoms of Mg -and 1 mole of Mg contains 6.022x10²³ atoms of Mg-:
6.578x10²³ atoms of Mg × (1 mole Mg / 6.022x10²³ atoms of Mg) =
<h3>1.092 moles of Mg</h3>